Cutter machining method and cutter

Abstract

The invention relates to the technical field of machining, and discloses a cutter machining method and a cutter, the machining method comprises the steps that firstly, base bodies of different sizes are selected, the base bodies comprise a first base body and a second base body, and the first base body comprises a bar A and a bar B which are integrally arranged; the second base body comprises a bar C, and a lining body M is coaxially arranged at the end of the bar C; fine grinding machining is conducted on the surfaces of the different bars and the lining bodies; the surface of the bar B in the first base body is machined to form a first blade part, and a first assembly is obtained; coaxially welding the end face of the first assembly and the end face of the lining body M to obtain a combined blank material; contour machining is conducted on the surface of the combined blank to obtain the contour and size required by the tool; the outer side face of the bar C is subjected to blade shape machining to form a second blade part; the machining requirements of different outlines of the shell can be met through one cutter, the cost of the cutter can be reduced, and the product machining efficiency and precision of the cutter can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and more specifically, to a tool machining method and a tool. Background Art

[0002] In the field of 3C electronic products, the outer shells of products are mostly complex arc surface structures or structures where straight surfaces are connected to arc surfaces. When machining the outer shells of products, it is necessary to machine not only the outer contour of the side surface of the product, but also the upper / lower planes of the product that are connected to the side contour. However, for the machining of such products, usually 2 - 3 different types of tools are required, and the tool types need to be changed during the machining process to machine different positions of the product contour respectively. This increases the tool change time, seriously affects the machining efficiency, and using multiple tools also increases the machining cost. In addition, due to certain errors in the manufacturing precision of the tools, the more tools there are, the greater the error, which will also affect the product yield to a certain extent.

[0003] At the same time, currently for the machining of such products, the tool materials used are mostly cemented carbide materials. Since the tools required for machining the outer contour of the product have a certain diameter difference at the contour, the tool grinder cannot machine a multi-edge tooth structure, and the quality of such tools is often poor, seriously affecting the machining efficiency and also resulting in an increase in machining cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a tool machining method and a tool for solving the technical problems existing in the prior art, which can reduce the tool cost and improve the machining efficiency.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] The present invention provides a tool machining method, and the specific steps of the method are as follows:

[0007] Step S1: Select substrates of different sizes, including a first substrate and a second substrate. The first substrate includes a bar A and a bar B integrally arranged; the second substrate includes a bar C, and a liner M is coaxially arranged at the end of the bar C;

[0008] Step S2: Perform precision grinding on the surfaces of different bars and liners in Step S1;

[0009] Step S3: Process a first cutting edge portion on the surface of the bar B in the first substrate to obtain a first assembly;

[0010] Step S4: Correspondingly arrange the end face of the first assembly and the end face of the liner M, and perform coaxial welding to obtain a combined blank; the bar B is located between the bar A and the liner M;

[0011] Step S5: Profile machining is performed on the surface of the combined blank to obtain the required profile and dimensions of the tool, and the cross-sectional area of the bar B perpendicular to the axis of the combined blank is the largest after the profile machining;

[0012] Step S6: Edge machining is performed on the outer side surface of the bar C in the combined blank to form a second cutting edge part and obtain the required tool.

[0013] Furthermore, the machining method further includes: during coaxial welding, if non-coaxiality is detected, the coaxiality is corrected by laser machining, and finish grinding is performed on the surface after the coaxiality correction.

[0014] Furthermore, the first cutting edge part includes a plurality of first cutting edges that are evenly distributed and helically arranged. The rake angle of the first cutting edge is -10° to 35°, the clearance angle is 0° to 25°, and the helix angle is 0°

[0015] to 45°; the second cutting edge part includes a plurality of second cutting edges that are evenly distributed and helically arranged. The rake angle of the second cutting edge is -5° to 25°, the clearance angle is 0° to 15°, and the helix angle is 0° to 30°; the width of the clearance angle of the second cutting edge is 0.01 mm to 0.1 mm, the width of the cutting tooth is 0.1 mm to 2 mm, and the height of the cutting tooth is 0.1 mm to 2 mm.

[0016] Furthermore, the number of cutting edges of the first cutting edge part is 2 to 15, the number of cutting edges of the second cutting edge part is 10 to 100, and the relationship between the number of cutting edges of the second cutting edge part and the diameter of the corresponding bar is:

[0017] 3.14 × diameter ÷ cutting tooth width = maximum number of cutting edges, where the number of cutting edges is 1 / 10 of the maximum number of cutting edges to the maximum number of cutting edges.

[0018] Furthermore, in step S3, a helical groove is machined on the outer side surface of the bar B in the first substrate and precision edge grinding is performed to form the first cutting edge part. The ratio of the depth of the helical groove perpendicular to the axis of the bar B to the size of the bar B ranges from 1 / 12 to 7 / 12.

[0019] Furthermore, the outer side surface of the bar C in the combined blank is recessed inward toward the axis to form a recess, or protruded outward away from the axis to form a protrusion. The second cutting edge part is provided on the surface of the recess or protrusion and / or the outer side surface of the bar C connected to the recess; the ratio of the depth of the recess on the combined blank to the size of the bar C is 1 / 20 to 1 / 2.

[0020] Furthermore, a coating material with a thickness of 1 to 10 μm is coated on the surface of the cutting edge in the first cutting edge part.

[0021] Further, an installation groove is spirally arranged on the outer side surface of the bar stock B in the combined blank, a material block N is arranged in the installation groove, and the first cutting edge portion is formed by processing the surface of the material block N.

[0022] Further, the bar stock A, the bar stock B, and the liner M are respectively made of cemented carbide material or stainless steel material, and the bar stock C and the material block N are made of polycrystalline diamond or cubic boron nitride material.

[0023] The present invention also provides a cutting tool, which is prepared based on the cutting tool processing method.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] The cutting tool processing method proposed by the present invention welds different bar stocks into an integral structure, and is respectively provided with a first cutting edge portion and a second cutting edge portion. The method is simple, reliable and can efficiently obtain a cutting tool, and a cutting tool can meet the processing requirements of different contours of the outer shell. Different bar stocks can adopt different materials according to actual needs, which can reduce the cost of the cutting tool. While ensuring the overall structural strength of the cutting tool, it can also improve the processing efficiency and accuracy of the cutting tool for products, thereby improving the product yield rate; the overall structure of the cutting tool of the present invention has high strength and processing accuracy, and can meet the processing requirements of different contours of the outer shell. Description of the Drawings

[0026] In order to more clearly illustrate the solutions in the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0027] Figure 1 is a flowchart of the cutting tool processing method of the present invention.

[0028] Figure 2 is an overall schematic diagram of the cutting tool of the present invention.

[0029] Figure 3 is a partial schematic diagram of the first assembly in the present invention.

[0030] Figure 4 is a partial schematic diagram of the combined blank in the present invention.

[0031] Figure 5 is an example diagram of the cutting tool of the present invention.

[0032] Figure 6 is a schematic diagram of the first cutting edge portion and the second cutting edge portion in the present invention.

[0033] Figure 7Schematic diagram of the cutting edge in the present invention.

[0034] Figure 8 Embodiment diagram of the concave part on the bar C in the present invention.

[0035] Figure 9 Another example diagram of the first cutting edge part in the tool of the present invention.

[0036] Figure 10 Schematic diagram of the first cutting edge part forming a cutting edge in another example of the present invention.

[0037] Figure 11 Example diagram of the actual application of the tool of the present invention.

[0038] Figure 12 Another example diagram of the actual application of the tool of the present invention. Detailed implementation manners

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs; the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position shown in the drawings, and are only for convenience of description and cannot be construed as a limitation to the technical solution of the present invention.

[0040] The terms "comprising" and "having" and any variations thereof in the specification and claims of the present invention and the above description of the drawings are intended to cover non-exclusive inclusion; the terms "first", "second", etc. in the specification and claims of the present invention or the above drawings are used to distinguish different objects and not to describe a specific order. In the specification and claims of the present invention and the above description of the drawings, when an element is referred to as being "fixed to" or "mounted on" or "disposed on" or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to that other element.

[0041] In addition, the mention of "embodiment" herein means that a specific feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0042] Embodiment 1

[0043] Refer to Figure 1 As shown, the present invention provides a tool processing method, and the specific steps of the processing method are as follows:

[0044] Step S1: Select substrates of different sizes, including a first substrate and a second substrate. The first substrate includes a rod A and a rod B integrally arranged; the second substrate includes a rod C, and a liner M is coaxially provided at the end of the rod C (as shown in Figure 2 ).

[0045] In this step S1, for the convenience of processing and for facilitating the control of the coaxiality of different rods after processing, the rod A, the rod B, and the rod C are all cylindrical rods. Among them, the rod A and the rod B can be two rods welded into one body, or it can be a single rod processed to form A segments and B segments with different diameters. The diameter of the rod B is greater than that of the rod A and the rod C. For the convenience of processing and improving the processing efficiency, the diameters of the rod A, the rod C, and the liner M can be set to be the same and are all smaller than the diameter of the rod B. According to the actual processing needs, the diameters of the rod A, the rod C, and the liner M can also be set differently, and the purpose of the present invention can be achieved.

[0046] In this embodiment, the diameter of the rod A is 10 mm to 30 mm, and the height is 20 mm to 50 mm; the diameter of the rod B is 20 mm to 45 mm, and the height is 2 mm to 10 mm; the diameter of the rod C is 8 to 35 mm, and the height is 8 to 20 mm; the diameter of the liner M is 6 to 35 mm, and the height is 0 to 5 mm; any value can be taken within the above range according to actual needs, and the processing requirements of different product profiles can be met.

[0047] Step S2: Perform fine grinding on the surfaces of different rods and liners in step S1, including the end face B2 of the rod B in the first substrate, the end face M1 of the liner M, and the outer side faces B3 and C1 of the rod B and the rod C (as shown in Figure 2 ), to ensure that the surfaces of different rods and liners have better flatness;

[0048] Specifically, if two bar stocks, namely bar stock A and bar stock B, are used, the end face A1 of bar stock A and the end face B1 of bar stock B have been welded together, that is, in this step, only the end face B2 needs to be precisely ground. The surfaces of different bar stocks and the liner are respectively precisely ground using a zirconia ceramic grinding wheel to ensure better flatness during welding; the rotational speed of the zirconia ceramic grinding wheel is 3000 - 4000 n / min, the feed rate is 50 mm / min - 100 mm / min, and the grinding depth is 0.001 mm, so that a surface roughness within Ra 0.1 mm and a flatness within 0.005 - 0.05 mm can be obtained, which can enable higher welding quality in the subsequent process.

[0049] Step S3: A spiral groove is machined on the outer side B3 of the bar stock B in the first base body and precisely ground to form a first cutting edge portion 11 and obtain a first assembly (as shown in Figure 3 ).

[0050] In this step S3, the precise grinding includes cylindrical grinding and end face grinding. The rotational speed for rough cutting is 3000 - 4000 n / min, the feed rate is 10 mm / min - 20 mm / min, and the grinding depth is 0.5 mm; the rotational speed for finish cutting is 3000 - 4000 n / min, the feed rate is 30 mm / min - 50 mm / min, and the grinding depth is 0.1 - 0.2 mm; by using a larger grinding depth in rough cutting, reliable machining of the spiral groove is carried out, and finally, the spiral groove and the cutting edge parameters are finely machined through the finish cutting parameters, and the parameters can obtain better cutting edge quality and no obvious chipping at the cutting edge.

[0051] Step S4: The end face B2 of the first assembly is correspondingly arranged with the end face M1 of the second base body, and the end face B2 and the end face M1 are coaxially welded to obtain a combined blank E (as shown in Figure 4 ).

[0052] In this step S4, the first assembly and the liner M of the second base body are welded together using vacuum brazing or other methods to obtain a combined blank E with an integral structure, that is, the bar stock A, the bar stock B, and the bar stock C are coaxially arranged in sequence, and the liner M is located between the bar stock B and the bar stock C; among them, vacuum brazing uses a low-temperature Ag-based filler metal, the vacuum degree is maintained at 3×10 -3 ~1×10 -3 Pa, the welding temperature is 600 - 800 °C, and the holding time is 5 - 15 min, which can enable the two welding surfaces to be in full contact, ensure no voids, and can obtain higher welding quality.

[0053] Step S5: Perform contour machining on the surface of the combined blank E to obtain the contour and dimensions of the required combined blank E; wherein, the cross-sectional area of the bar B perpendicular to the axis of the combined blank E after machining is the largest, i.e., larger than that of the bar A, the bar C, and the liner M respectively.

[0054] Specifically, since the bar A, the bar B, and the bar C are all cylindrical bars, contour machining can be performed on the circumferential surface of the combined blank E welded into one body by laser machining to obtain the required outer circle contour; wherein nanosecond laser is used for machining, the laser pulse width is 30 ns, the laser frequency is 900 Hz, the average power is 300 W, and the laser duty cycle is 19%.

[0055] In this embodiment, since the first cutting edge portion 11 is formed on the surface of the bar B, in order to avoid affecting the surfaces of other bars or causing interference to the machine tool when forming the first cutting edge portion 11, the cross-sectional area of the bar B perpendicular to the axis of the combined blank E is made the largest to ensure the reliability of the overall tool structure.

[0056] Step S6: Perform edge machining on the outer side surface C1 of the combined blank E to form the second cutting edge portion 12 and obtain the second combined component, and the axes of the second cutting edge portion 12 and the first cutting edge portion 11 coincide, that is, the overall tool structure is obtained ( Figure 5 as shown in).

[0057] In this step S6, the rake angle, clearance angle, and helix angle of the second cutting edge portion 12 are obtained by nanosecond laser edge machining, wherein the laser pulse width is 30 ns, the laser frequency is 900 Hz, the average power is 300 W, and the laser duty cycle is 15% - 19%, and the second cutting edge portion 12 can be reliably obtained.

[0058] Furthermore, in the step S4, if it is detected that the first combined component and the bar C are not coaxial after welding, the coaxiality is corrected by laser machining, that is, the outer side surface C3 of the bar C is machined to remove the redundant part to obtain the side surface C31, the coaxiality of the first combined component and the bar C is ensured, and the side surface C31 is subjected to precision grinding to ensure that the overall structure has good surface quality.

[0059] Specifically, if the bar stock A, bar stock B, which are two structural components, and bar stock C are detected to be non-coaxial, then the excess parts on the outer sides of bar stock B or bar stock C are removed by laser machining respectively to ensure the coaxiality of the overall tool structure. Among them, the laser pulse width of the nanosecond laser is 30 ns, the laser frequency is 900 Hz, the average power is 300 W, and the laser duty cycle is 19%. Since the side surface B31 of bar stock B and the side surface C31 of bar stock C are both rough surfaces when the coaxiality is ensured by laser machining, the side surface B31 and the side surface C31 need to be precision ground to facilitate the formation of the cutting edge parts on both of them to ensure the reliability of the overall structure.

[0060] Further, referring to Figure 6 and Figure 7 shown in the figure, the first cutting edge part 11 includes a plurality of first cutting edges that are evenly distributed and helically arranged. The rake angle of the first cutting edge is -10° to 35°, the clearance angle is 0° to 25°, and the helix angle is 0° to 45°. The second cutting edge part 12 respectively includes a plurality of second cutting edges that are evenly distributed and helically arranged. The rake angle of the second cutting edge is -5° to 25°, the clearance angle is 0°

[0061] to 15°, and the helix angle is 0° to 30°, which can meet different processing requirements and ensure the processing quality of the tool.

[0062] Specifically, the rake angle of the first cutting edge can be -10°, -5°, 0°, 5°, 10°, 15°, 20°, 25°, 35° or any value within the range. Similarly, the clearance angle can be 0°, 5°, 10°, 15°, 25° or any value within the range, which can meet different processing requirements. The helix angle can also be 0°, 15°, 30°, 45° or any value within the range, all of which can meet different processing requirements. Similarly, the parameters of the second cutting edge can also be arbitrarily taken within the above range, and all can meet different processing requirements.

[0063] In this embodiment, since the first cutting edge part 11 and the second cutting edge part 12 are arranged in sequence, the first cutting edge and the second cutting edge can adopt the same cutting edge type or different cutting edge types. Adopting the same cutting edge type is convenient for processing during actual processing and can also save processing steps. In this embodiment, the first cutting edge and the second cutting edge adopt different cutting edge types, which can meet different processing requirements and ensure that both the first cutting edge part 11 and the second cutting edge part 12 have reliable structural accuracy and strength, thereby ensuring the overall structural strength of the tool.

[0064] Further, the back angle width of the second cutting edge in the second cutting edge part 12 is 0.01 mm to 0.1 mm, the width of the cutting teeth is 0.1 mm to 2 mm, and the height of the cutting teeth is 0.1 mm to 2 mm; specifically, the back angle width can take values of 0.01 mm, 0.05 mm, 0.1 mm or any value within the range, and the width and height of the cutting teeth can respectively take values of 0.1 mm, 1 mm, 2 mm or any value within the range, that is, different processing requirements can be satisfied.

[0065] Further, the number of cutting edges of the first cutting edge part 11 is 2 to 15, the number of cutting edges of the second cutting edge part 12 is 10 to 100, and the relationship between the number of cutting edges of the second cutting edge part 12 and the diameter of the corresponding bar stock, that is, bar stock B and bar stock C, is: 3.14 × diameter ÷ cutting tooth width = maximum number of cutting edges, where the number of cutting edges is 1 / 10 of the maximum number of cutting edges to the maximum number of cutting edges.

[0066] Specifically, if the number of cutting edges of both the first cutting edge part 11 and the second cutting edge part 12 is too large, it will increase the difficulty of cutting edge forming processing, while if the number of cutting edges is too small, it cannot meet the processing requirements of the product. That is, the number of cutting edges of the first cutting edge part 11 can take values of 2, 6, 8, 15 or any value within the range, and the number of cutting edges of the second cutting edge part 12 can take values of 10, 50, 80, 100 or any value within the range, all of which can meet different processing requirements.

[0067] Further, in step S3, the depth of the helical groove on the outer side surface B3 of the bar stock B perpendicular to the axis of the bar stock B ( Figure 3 as shown in) and the ratio of the size of the bar stock B (i.e., diameter) range from 1 / 12 to 7 / 12.

[0068] Specifically, the depth of the helical groove on the bar stock B cannot be too large or too small. That is, if it is too large, it is not convenient to process the first cutting edge part 11, and it will also affect the surface quality of the first assembly during processing; if it is too small, it cannot meet the processing requirements of the actual product, that is, it cannot realize the processing of different contours of the product. Therefore, the ratio range is preferably 1 / 12 to 7 / 12, and specifically can take values of 1 / 12, 1 / 6, 1 / 4, 1 / 3, 1 / 2, 7 / 12 or any value within the above range, all of which can meet the processing requirements and ensure the overall quality of the tool surface.

[0069] Further, in step S6, the outer side surface C1 of the bar stock C in the combined blank E is concave inward toward the axis direction or convex outward away from the axis direction to form a concave part or a convex part, and the second cutting edge part 12 is respectively provided on the surface of the concave part or convex part and / or the outer side surface of the bar stock C connected to the concave part or convex part.

[0070] Specifically, according to the processing requirements of different product profiles, the outer side surface of the bar stock C can be directly processed to form the second cutting edge portion 12; the outer side surface of the bar stock C can also be concave or convex to form a concave portion or a convex portion, and the second cutting edge portion 12 is provided on the surface of the concave portion or the convex portion. The outer side surfaces of the second tool head 30 connected to the concave portion or the convex portion can also be respectively provided with the second cutting edge portion 12, so as to meet different processing requirements and improve the processing quality and accuracy of the tool for the product.

[0071] Specifically, the depth of the concave portion on the combined blank E perpendicular to the axis of the bar stock C ( Figure 5 as shown in) and the size (i.e., diameter) of the bar stock C have a ratio of 1 / 20 to 1 / 2, and specifically can be 1 / 20, 1 / 10, 1 / 5, 1 / 2 or any value within the above range; if the depth of the concave portion is too large, it will affect the processing of the second cutting edge portion 12 and cannot ensure the overall rigidity of the tool; if the depth of the concave portion is too small, it cannot meet different processing requirements.

[0072] Further, the bar stock A, the bar stock B, and the liner M are respectively made of cemented carbide materials, such as tungsten steel materials, which have low cost and certain rigidity; while the bar stock C is made of polycrystalline diamond (PCD) or cubic boron nitride (CBN) materials, which have strong hardness and ensure that the second cutting edge portion 12 and the overall tool have strong structural strength.

[0073] Specifically, the liner M and the bar stock C can be an integral structure and are also made of polycrystalline diamond materials; the liner M and the bar stock C can also be two structures welded into one, that is, the liner M can also be made of cemented carbide materials to reduce the tool cost.

[0074] Further, in order to improve the wear resistance of the cutting edge in the first cutting edge portion 11 and improve the tool life, a coating material with a thickness of 1 to 10 μm is coated on the surface of the cutting edge in the first cutting edge portion 11; the coating material includes one or more of TiAIN, AlTiN, and TiSiN materials, and different materials can also be used as the coating material according to requirements, and all can achieve the improvement of the wear resistance of the cutting edge.

[0075] In this embodiment, the surface of the concave portion on the combined blank E adopts an arc surface 61 ( Figure 8 as shown in a) or a circular arc surface 62 ( Figure 8 as shown in b), and the second cutting edge portion 12 is processed on the arc surface 61 or the circular arc surface 62, with a simple structure and can meet the actual requirements.

[0076] In this embodiment, the surface of the concave portion on the combined blank E includes a first straight surface segment 631, a first arc surface segment 632, and a second arc surface segment 633 ( Figure 8As shown in Fig. c, the first straight surface section 631 is arranged parallel to the axis of the combined blank E. The two ends of the first straight surface section 631 are oppositely arranged and are sequentially connected to the first arc surface section 632 and the second arc surface section 633. The second cutting edge portion 12 is formed on the first straight surface section 631, the first arc surface section 632 and the second arc surface section 633 in sequence to meet the processing requirements of different product profiles.

[0077] In this embodiment, the surface of the concave portion on the combined blank E includes an arc surface section 641, a first inclined surface section 642, and a second inclined surface section 643 ( Figure 8 As shown in Fig. d, the first inclined surface section 642 and the second inclined surface section 643 are sequentially arranged and connected along the tangential directions at both ends of the arc surface section 641 to meet the processing requirements of different product profiles.

[0078] In this embodiment, the surface of the concave portion on the combined blank E includes a second straight surface section 651, a third arc surface section 652, a fourth arc surface section 653, a third inclined surface section 654, and a fourth inclined surface section 655 ( Figure 8 As shown in Fig. e, the second straight surface section 651 is arranged parallel to the axis of the combined blank E. The two ends of the second straight surface section 651 are oppositely arranged and are sequentially connected to the third arc surface section 652 and the fourth arc surface section 653. The third inclined surface section 654 is arranged along the tangential direction of the end of the third arc surface section 652 away from the second straight surface section 651, and the fourth inclined surface section 655 is arranged along the tangential direction of the end of the fourth arc surface section 653 away from the second straight surface section 651 to meet the processing requirements of different product profiles.

[0079] Embodiment Two

[0080] Refer to Figure 9 and Figure 10 As shown, the difference between this Embodiment Two and Embodiment One lies in step S3, that is, the specific steps of the processing method include the following:

[0081] Step S21: Select substrates of different sizes, including a first substrate and a second substrate. The first substrate includes a rod A and a rod B integrally arranged.

[0082] Step S22: Perform precision grinding on the surfaces of different rods and liners in step S1, including the end face B2 of the rod B in the first substrate, the end face M1 of the liner M, and the outer side surfaces B3 and C1 of the rod B and the rod C.

[0083] Step S23: The outer side surface B3 of the rod B in the first substrate is spirally provided with a mounting groove 51. A material block N is arranged in the mounting groove 51. The first cutting edge portion 11 is formed on the surface of the material block N to obtain a third combined component. The material block N is made of polycrystalline diamond (PCD) or cubic boron nitride (CBN) material.

[0084] Specifically, since the mounting groove 51 is provided on the bar stock B in the first base body, the blank N made of polycrystalline diamond material is arranged in the mounting groove 51, and the blank N is processed to form the first cutting edge portion 11. That is, compared with directly processing the first cutting edge portion 11 on the outer side surface of the bar stock B, in this embodiment, the blank N and the bar stock B can be made of different materials. That is, the bar stock B can be made of cemented carbide material (such as tungsten steel material) or stainless steel material with lower cost, while the blank N is made of polycrystalline diamond (PCD) or cubic boron nitride (CBN) material, so that the first cutting edge portion 11 with large structural strength can be obtained, that is, the first cutting edge portion 11 and the second cutting edge portion 12 of the tool as a whole have large hardness and strength, improving the structural rigidity of the tool as a whole, and further improving the machining accuracy and efficiency of the tool for products.

[0085] Step S24: Correspondingly arrange the end face B2 of the third assembly and the end face M1 of the second base body, and perform coaxial welding on the end face B2 and the end face M1 to obtain the combined blank F;

[0086] Step S25: Perform profile machining on the surface of the combined blank F to obtain the profile and dimensions of the required combined blank E;

[0087] Step S26: Perform cutting edge machining on the outer side surface C1 of the combined blank F to form the second cutting edge portion 12 and obtain the fourth assembly, that is, obtain the overall tool structure.

[0088] Embodiment III

[0089] The difference between this Embodiment III and Embodiment II lies in steps S3 and S6. That is, the specific steps of the processing method are as follows:

[0090] Step S31: Select bases of different sizes, including the first base and the second base. The first base includes a bar stock A and a bar stock B integrally arranged;

[0091] Step S32: Perform fine grinding on the surfaces of different bar stocks and liners in step S1;

[0092] Step S33: The mounting groove 51 is spirally arranged on the outer side surface B3 of the bar stock B in the first base. The blank N is arranged in the mounting groove 51 to obtain the fifth assembly; the blank N is made of polycrystalline diamond (PCD) or cubic boron nitride (CBN) material;

[0093] Step S34: Correspondingly arrange the end face B2 of the third assembly and the end face M1 of the second base body, and perform coaxial welding on the end face B2 and the end face M1 to obtain the combined blank G;

[0094] Step S35: Perform contour machining on the surface of the combined blank G to obtain the contour and dimensions of the required combined blank G.

[0095] Step S36: Perform edge machining on the outer side surfaces C1 of the blank N and the combined blank G respectively to form the first cutting edge portion 11 and the second cutting edge portion 12 respectively, and obtain the sixth assembly, that is, obtain the overall tool structure.

[0096] In the third embodiment, since both the blank N and the bar stock C are made of polycrystalline diamond (PCD) or cubic boron nitride (CBN) materials, in order to avoid affecting the installation reliability of the blank N when welding the fifth assembly and the liner M, when welding the blank N in the installation groove 51, the fifth assembly and the liner M in the second base body are also welded at the same time, and finally the first cutting edge portion 11 and the second cutting edge portion 12 are formed by unified machining, further ensuring the reliability of the overall structure. In this embodiment, the processing sequence of the first cutting edge portion 11 and the second cutting edge portion 12 is not limited either, that is, they can be processed simultaneously, or the first cutting edge portion 11 can be processed first or the second cutting edge portion 12 can be processed first, and the tool can be obtained in any case.

[0097] The present invention also provides a tool, and the tool is prepared based on the above tool processing method. Refer to Figure 11 As shown, when the tool is applied to process the product contour, first, the second cutting edge portion 12 in the second base body is used to process the side portion of the product to obtain an arc-shaped contour; then, the first cutting edge portion 11 in the second base body is used to process the end portions of the upper end surface and the lower end surface of the product that are connected to the arc-shaped contour respectively, and the required contour of the product is obtained.

[0098] Refer to Figure 12 As shown, when the tool is applied to process the product contour, first, the first cutting edge portion 11 in the first base body is used to perform contour machining on the upper end surface and the lower end surface of the product respectively, and the second cutting edge portion 12 in the second base body is used to perform contour machining on the side surface of the product to obtain an arc-shaped contour, and the required contour of the product can be obtained.

[0099] The tool processing method and the tool provided by the present invention can meet the processing requirements of different contours and ensure the processing efficiency and processing accuracy.

[0100] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and shall be included in the protection scope of the present invention.

Claims

1. A tool processing method, characterized in that: The specific steps of the method are as follows: Step S1: Select substrates of different sizes, including a first substrate and a second substrate. The first substrate includes a rod A and a rod B integrally provided; the second substrate includes a rod C, and a liner M is coaxially provided at the end of the rod C. Step S2: Finish grinding the surfaces of different rods and liners in Step S1. Step S3: A first cutting edge portion is formed on the surface of the rod B in the first substrate to obtain a first assembly. Step S4: The end face of the first assembly is arranged corresponding to the end face of the liner M and coaxially welded to obtain a combined blank. The rod B is located between the rod A and the liner M. Step S5: Profile machining is performed on the surface of the combined blank to obtain the required profile and dimensions of the tool. The cross-sectional area of the rod B perpendicular to the axis of the combined blank is the largest after the profile machining. Step S6: Edge profile machining is performed on the outer side surface of the rod C in the combined blank to form a second cutting edge portion and obtain the required tool.

2. The tool processing method according to claim 1, characterized in that: The processing method further includes: during coaxial welding, if non-coaxiality is detected, the coaxiality is corrected by laser processing, and finish grinding is performed on the surface after the coaxiality correction.

3. The tool processing method according to claim 1, characterized in that: The first cutting edge portion includes a plurality of first cutting edges evenly distributed and spirally arranged. The rake angle of the first cutting edge is -10° to 35°, the clearance angle is 0° to 25°, and the helix angle is 0° to 45°; the second cutting edge portion includes a plurality of second cutting edges evenly distributed and spirally arranged. The rake angle of the second cutting edge is -5° to 25°, the clearance angle is 0° to 15°, and the helix angle is 0° to 30°; the width of the clearance angle of the second cutting edge is 0.01 mm to 0.1 mm, the width of the cutting tooth is 0.1 mm to 2 mm, and the height of the cutting tooth is 0.1 mm to 2 mm.

4. The tool processing method according to claim 3, characterized in that: The number of cutting edges of the first cutting edge portion is 2 to 15, and the number of cutting edges of the second cutting edge portion is 10 to 100. The relationship between the number of cutting edges of the second cutting edge portion and the diameter of the corresponding rod is: 3.14 × diameter ÷ cutting tooth width = maximum number of cutting edges, where the number of cutting edges is 1 / 10 of the maximum number of cutting edges to the maximum number of cutting edges.

5. The tool processing method according to claim 1, characterized in that: In Step S3, a spiral groove is machined on the outer side surface of the rod B in the first substrate and precision edge grinding is performed to form the first cutting edge portion. The ratio range of the depth of the spiral groove perpendicular to the axis of the rod B to the size of the rod B is 1 / 12 to 7 / 12.

6. The tool processing method according to claim 1, characterized in that: The outer side surface of the rod C in the combined blank is recessed inward toward the axis direction to form a recess, or protruded outward away from the axis direction to form a protrusion. The second cutting edge portion is respectively arranged on the surface of the recess or protrusion and / or the outer side surface of the rod C connected to the recess; the ratio of the depth of the recess on the combined blank to the size of the rod C is 1 / 20 to 1 / 2.

7. The tool processing method according to claim 1, characterized in that: A coating material with a thickness of 1 to 10 μm is coated on the surface of the cutting edge in the first cutting edge portion.

8. The tool processing method according to claim 1, characterized in that: An installation groove is spirally arranged on the outer side surface of the rod B in the combined blank, and a material block N is arranged in the installation groove. The surface of the material block N is machined to form the first cutting edge portion.

9. The tool processing method according to claim 8, characterized in that: The bar stock A, bar stock B, and liner M are respectively made of cemented carbide or stainless steel, and the bar stock C and the material block N are made of polycrystalline diamond or cubic boron nitride.

10. A tool, characterized in that: The cutting tool is prepared by the cutting tool processing method according to any one of claims 1 to 9.

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